Lion Gears Qual Lock Quick Release Mount - 0.75 Dual Lock Quick Realease/Lock Lever makes the Width Fully Adjustable to Fit All Pictatinny Rails Robust and Light-Weighted Design with Steel-to-Steel Connection between Screw and Locking Nut Plate Precision Machined Solid Aircraft Grade Aluminum with Hard Anodizing for Tight Tolerance and Durability See-Thru Design with Picatinny/Weaver Mounting Base .75" Riser, 5" Long with 12 Slots